Add gl.dll, compositor.dll, and surface.dll.

ui/gfx/gl/gl_implementation.h

Index: ui/gfx/gl/gl_implementation.h
===================================================================
--- ui/gfx/gl/gl_implementation.h	(revision 96560)
+++ ui/gfx/gl/gl_implementation.h	(working copy)
@@ -10,6 +10,7 @@
 
 #include "base/native_library.h"
 #include "build/build_config.h"
+#include "ui/gfx/gl/gl_export.h"
 #include "ui/gfx/gl/gl_switches.h"
 
 namespace gfx {
@@ -39,7 +40,7 @@
 void SetGLImplementation(GLImplementation implementation);
 
 // Get the current GL implementation.
-GLImplementation GetGLImplementation();
+GL_EXPORT GLImplementation GetGLImplementation();
 
 // Get the GL implementation with a given name.
 GLImplementation GetNamedGLImplementation(const std::wstring& name);